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Finding the Fourth Proportional to 3,607.71, 5,411.67 and 2,143.62

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Solution

The fourth proportional to 3,607.71, 5,411.67 and 2,143.62 is: 3,215.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,607.71 : 5,411.67 = 2,143.62 : x
  2. Step 2: Convert to fraction form
    3,607.71/5,411.67 = 2,143.62/x
  3. Step 3: Cross multiply
    3,607.71x = 5,411.67 × 2,143.62
  4. Step 4: Simplify right side
    3,607.71x = 11,600,564.05
  5. Step 5: Solve for x
    x = 11,600,564.05/3,607.71
  6. Step 6: Final answer
    x = 3,215.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.